<template>
  <div class='top-category'>
    <div class="container">
      <XtxBread>
        <XtxBreadItem to="/">首页</XtxBreadItem>
        <Transition
          name="pop"
          mode="out-in"
        >
          <XtxBreadItem :key="currCategory.id">{{currCategory.name}}</XtxBreadItem>
        </Transition>
      </XtxBread>
      <!-- 轮播图 -->
      <XtxCarousel
        :sliders='sliders'
        style="height:500px"
      />
      <!-- 二级分类列表 -->
      <div class="sub-list">
        <h3>全部分类</h3>
        <ul>
          <li
            v-for="item in currCategory.children"
            :key="item.id"
          >
            <a href="javascript:;">
              <img :src="item.picture">
              <p>{{item.name}}</p>
            </a>
          </li>
        </ul>
      </div>
      <!-- 分类关联商品 -->
      <div
        class="ref-goods"
        v-for="item in subCategory"
        :key="item.id"
      >
        <div class="head">
          <h3>- {{item.name}} -</h3>
          <p class="tag">温暖柔软，品质之选</p>
          <XtxMore :to='`/category/sub/${item.id}`' />
        </div>
        <div class="body">
          <GoodsItem
            :goods='sub'
            v-for="sub in item.goods"
            :key="sub.id"
          />
        </div>

      </div>
    </div>

  </div>
</template>

<script>
import GoodsItem from './components/goods-item'
import { getBannerListAPI } from '@/api/home'
import { findTopCategory } from '@/api/category'
export default {
  name: 'TopCategory',
  data () {
    return {
      // 轮播图数据
      sliders: [],
      // 全部分类数据
      subCategory: []
    }
  },
  watch: {
    '$route.params.id': {
      handler (newVal) {
        newVal && findTopCategory(newVal).then(res => {
          // console.log(res)
          this.subCategory = res.children
        })
      },
      immediate: true
    }
  },
  components: {
    GoodsItem
  },
  async created () {
    // 轮播图数据
    const { result } = await getBannerListAPI()
    this.sliders = result
  },
  computed: {
    // 二级数据
    currCategory () {
      let currCategory = {}
      const list = this.$store.state.category.list
      if (list && list.length) {
        currCategory = list.find(item => item.id === this.$route.params.id) || {}
      }
      return currCategory
    }
  }
}
</script>

<style scoped lang='less'>
.top-category {
  h3 {
    font-size: 28px;
    color: #666;
    font-weight: normal;
    text-align: center;
    line-height: 100px;
  }
  .sub-list {
    margin-top: 20px;
    background-color: #fff;
    ul {
      display: flex;
      padding: 0 32px;
      flex-wrap: wrap;
      li {
        width: 168px;
        height: 160px;
        a {
          text-align: center;
          display: block;
          font-size: 16px;
          img {
            width: 100px;
            height: 100px;
          }
          p {
            line-height: 40px;
          }
          &:hover {
            color: @xtxColor;
          }
        }
      }
    }
  }
}
.ref-goods {
  background-color: #fff;
  margin-top: 20px;
  position: relative;
  .head {
    .xtx-more {
      position: absolute;
      top: 20px;
      right: 20px;
    }
    .tag {
      text-align: center;
      color: #999;
      font-size: 20px;
      position: relative;
      top: -20px;
    }
  }
  .body {
    display: flex;
    justify-content: space-around;
    padding: 0 40px 30px;
  }
}
</style>
